For most kids, school is already back in full swing. In addition to academics, that means more time outside for school-aged kids and serious after-school practice for teens.

Physical activity is critical for kids. It helps them sleep better at night, improves their concentration, cuts back on behavioral issues and gives their immune system a boost. But it also ups their risk for injury.

Keep your kids safe and injury-free this school year with these tips:

Skip out on sandals or flip-flops on the playground, and go for tennis shoes instead. This helps cut back on the likelihood of scary trips and falls. For after-school sports, make sure all gear is functioning properly and fits correctly.